Plastic-block mold.



w. W. OWENS. PLASTIC BLOCK MOLD.

APPLICATION FILED JULY 18,1909.

Patented Dec. 6,1910.

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APPLICATION rrnnn JULY 18,1909.

Patented'Dec. 6, 1910.

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W. W. OWENS. PLASTIC BLOCK MOLD. APPLIOATION nun JULY 10,1909.

Patented Dec.-6,1910.

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UNITED STATES PATENT orrron.

WALTER W. OWENS, 0F SALT LAKE CITY, UTAH.

PLASTIC-BLOCK MOLD.

'1 '0 all whom it may concern:

Be it known that I, WALTER W. OWENS, a citizen of the United States, residing at Salt Lake City, in the county of Salt Lake and State of Utah, have invented certain new and useful Improvements in Plastic- Block Molds, of which the following is a the final chemical setting of the plastic material.

These objects I attain in the mold illustrated by the accompanying drawings in which similar letters of reference indicate like parts throughout the several figures.

,Figure 1 is a front elevation with the Fig. 2 is a side elevation with the mo d open. Fig. 3 is a side elevation with mold closed and tilted. Fig. 4 is a plan of one of the blocks. Fig. 5 is a vertical section on line as a: of Fig. 4. Fig. 6 is a section of the top. Fig. 7 is a section of the bottom. Fig. 8 is an enlarged front elevation of two of the cores in place and reinforcing material around them. Fig. 9 is an elevation of the metal reinforcing material.

The mold may be made. of metal or wood and consists of a movable bottom 1, that constitutes the end piece of each individual block mold. This bottom is hinged at one it is being assembled, and to right it when assembled so the blocks will stand on end when they are being removed therefrom.

The same result, that is theslight adjustability of the mold, may be secured by pivotingthe said bottom 1, to the frame A.

In the upper side of the bottom 1 is formed V-shaped slots 16 so spaced and located that there is one in each individual block mold. To the bottom 1 is hinged the front 3, back 4 and end pieces 5. The front and back are fitted with uide flanges 6 to hold the end pieces in place when assembled. On the front and back are secured, or formed integral therewith the mortar ribs 7 and mortar lugs 7 so located and Specification of Letters Patent.

Application filed. July 16, 1909.

Patented Dec. 6, 1910.

Serial N 0. 508,076.

spaced as to form a groove in the edge of each individual block formed in said mold. Also on said back 4 is provided core lugs 8, one for each core, and in the front 3 is secured pointed set screws 9, one for each core, and so adjusted that when the mold is closed the points of said set screws 9 will engage said cores and hold them in place. lVithin each individual block mold and fitted on each of said core lugs 8, are the octagon shaped cores 10, a number greater than two being provided for each individual block mold, each core slightly tapering from the end that is fitted on the core lugs 8. The purpose of the tapering form being that they may be easily removed from the formed block by a slight blow on the end that is engaged by the set screws 9. In the back and front, parallel with the end pieces 5 are out channels 11, within which channels are placed the partitions 12, which when so placed form the sides for the individual block molds, thus cutting up the large mold into the individual block molds. A hinged lid or top 13 has secured on the inside, or formed integral therewith the lock forming lugs 14;, one for each individual block mold. Fastening means are provided to hold the said front 3, back t and ends 5 together near the top. Between the said cores 10 are placed strips of fine meshed wire, burlap or other reinforcing material.

In operation the mold is o ened and tilted back as shown in Fig. Tl i e front and top are opened as in Fig. 2. The cores 10 are placed on the core lugs 8 and reinforcing material placed between the cores, and around them if desired. The front is then closed and secured in place. The points of the set screws 9 engage the cores on the end opposite the core lugs 8. This insures the locus of the cores. The mold is then righted to a vertical position and the partitions 12 are slipped into the channels 11, and the plastic material (made to be free flowing by the an'lount of water used in mixing) is placed in the mold, leveling the top of the filled mold, the lid is closed. When the initial set has occurred, the mold is opened, and the top, front, back and ends are removed from around the formed blacks, each block standing on its end. The cores are removed by slightly knocking them to the rear. The formed blocks are then removed and placed for the final set and drying.

The form of the mold and its adjustments block having a mortar groove, and one end for each block having a locking lug, and the other end a V-shaped lock channel, so that the lug of one block fits within the \l-shaped channel of its adjacent block when laid in the wall. mortar to be used than could be without said grooves, and thus insures a more solid wall. The material used to make said blocks may be gypsum, plaster of paris, Acme plaster, lime cement, Keenes cement, Portland lime or cement concrete. The reinforcing material for the webs may be fine meshed metal, burlap, shredded fiber, hair or shredded metal.

Having thus described my invention, I desire to secure by Letters Patent and claim;

In a mold of the class described, the combination with a supporting frame, of a base The mortar grooves allow more with a plurality of vertically extending slots, 30

a plurality of sharpened lugs interposed between each pair of said slots, a front pivoted to said base opposite to said back provided with a plurality of vertical slots thereiu. adapted to cooperate with the slots of said back, a series of screws disposed between said slots of the front and opposite to the sharpened lugs of the back, cores adapted to be retained by said lugs and screws, partitions adapted to be retained in said slots, ribs formed adjacent said slots adapted to create depressionsin the blocks formed by the mold, and a top pivoted to saidback and adapted to detachably engage the front when the device is in its operative position, said top being provided with a plurality of lock forming lugs for each individual mold. In testimony whereof I have aflixed my signature in presence of two witnesses.

WALTER W. OWENS.

lVitnesses C. G. Goss, L. J. W'oon. 

